| Acronym | Meaning |
| SMA | Steel Manufacturers Association |
| ICCP | International Committee For Coal Petrology |
| ISG | International Stratigraphic Guide |
| LDA | Linear Discriminant Analysis |
| SPDT | Single-pole Double-throw (switch) |
| ACD | Available Chemicals Directory |
| API | Active Pharmaceutical Ingredient |
| ART | Advanced Recycling Technologies |
| SME | Shape Memory Effect |
| MSIS | Mass Spectrometer And Incoherent Scatter |